We present our experience of building a prototype system based on the Utility Model for adaptive multimedia. The Utility Model is proposed to capture the issues and dynamics in multi-session multimedia systems where the quality of service (QoS) of individual sessions is adapted to dynamic changes of available resources and of user preferences. We present the design and implementation of our pro...

Little specific research has been conducted to date on the adaptation of agile information systems development (ISD) methods. This article presents the work practice in dealing with the adaptation of such a method in the ISD department of one of the leading financial institutes in Europe. Two forms of method adaptation, static adaptation and dynamic adaptation, are introduced and discussed in d...

Context aware applications in Ubiquitous Computing (UC) require the dynamic adaptation to the context and the interoperability across heterogeneous platforms, as a distributed system. Service-oriented Architecture (SOA) enables the dynamic adaptation through using loosely-coupled services, and it also supports the interoperability through using XML messaging. For the adaptation, the orchestrati...

Web services have received much interest due to their potential to design and build complex inter-enterprise business applications. A particular interest concerns dynamic Web services composition that offers the opportunity for creating new Web services at runtime from those already published. In this paper we focus on mismatches occurring during dynamic composition of Web services. These misma...

Software applications executing in highly dynamic environments are faced with the challenge of frequent and usually unpredictable changes in their execution environment. In order to cope with this challenge effectively, the applications need to adapt to these changes dynamically. CASA (Contract-based Adaptive Software Architecture) provides a framework for enabling dynamic adaptation of applica...

Modern software applications are increasingly being deployed in highly dynamic computing environments, leading to frequent changes in their execution environment, such as workload variation, changing resource availability, and component faults. In order to e ectively cope with dynamic scenarios and take advantage of available resources, applications need to be able to adapt their con guration d...

The motion aftereffect (MAE) to drifting bivectorial stimuli, such as plaids, is usually univectorial and in a direction opposite to the pattern direction of the plaid. This is true for plaids that are perceived as coherent, but also for other plaids which are seen as transparent for most or all of the adaptation period. The underlying mechanisms of this MAE are still not well understood. In or...

1 State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China, Center for Brain Sciences, Institute of Military Cognitive and Brain Sciences, Academy of Military Medical Sciences, Beijing, China, Computer Science Department, Center for the Neural Basis of Cognition, Carnegie Mellon University, Pittsburgh, PA, United States, 4 School of System Science, ...

We studied the stability of changes in motor performance associated with adaptation to a novel dynamic environment during goal-directed movements of the dominant arm. Eleven normal, human subjects made targeted reaching movements in the horizontal plane while holding the handle of a two-joint robotic manipulator. This robot was programmed to generate a novel viscous force field that perturbed t...